Every job on solid ground.

Quotes, trades, site diaries, client-approved variations and progress claims that reconcile, all in one place.

100% free, open source alternative to JobTread, Buildertrend and Procore

Run Plinth Read the docs

Free and open source, MIT licensed.

1Quote accepted

Ashgrove kitchen renovation

$48,000.00

2Client approved

Pendant lights added

+$3,200.00

Approved by Alex Chen

3Claim reconciled

Current contract: $51,200.00
This claim: $13,400.00

Download claim CSV

Free

100% free. Yours to keep.

MIT licensed. Your jobs, photos and approvals live in your own installation.

MIT License

Plinth

Variations

Clients approve their own changes.

Your client signs in and approves the exact amount and scope. The contract changes only then.

draft

Pendant lights added

$3,200.00Approve this variation for $3,200.00

Progress claims

Claims that reconcile.

Enter work to date. Plinth deducts earlier claims and shows supplier commitments before you approve.

Stage 2 · lock-up

exported

Accepted quote: $48,000.00
Approved variations: $3,200.00
Current contract: $51,200.00
Previously exported: $14,400.00
This claim: $13,400.00

Download claim CSV

Trades

One booking per trade, across every job.

Book a subcontractor once. Plinth refuses an overlapping booking for the same trade on any job.

River City Electrical

booked

Tue 21 Oct, 7:00 am – 3:00 pm

Site diary

Every site day, with photos.

Publish the work, conditions and decisions, with photos your client can open.

21 Oct 2026

published

Rough-in complete for kitchen circuits.

Move in

Bring your accepted jobs with you.

Dry-run an Accepted jobs CSV, approve the exact file, undo it if you change your mind.

Dry-run result

Ashgrove kitchen renovation: $48,000.00
Bulimba bathroom refit: $21,500.00

Approve and import drafts

Also included

Everything else a job needs.

Purchase orders

Issue POs and record what arrived.

Approval history

Who prepared and who approved, with the exact record.

People & access

Clients see only their own jobs.

Agent drafts

Agents prepare drafts; people approve.

Export and restore

One archive with every job and photo.

Erase a job

Remove a job and its photos for good.

Put your next job on solid ground.

Run Plinth Read the docs

Free and open source, MIT licensed.